Question: What was the position when Joaquim Chissano replaced as the Chairperson of the African Union ?
Paraphrase: Tell me the position when Joaquim Chissano was replaced as the Chairperson of the African Union.
SPARQL (Wikidata): SELECT ?value WHERE { wd:Q208355 p:P39 ?s . ?s ps:P39 wd:Q946339 . ?s pq:P1366 ?value}